1061773378 has 4 divisors (see below), whose sum is σ = 1592660070. Its totient is φ = 530886688.

The previous prime is 1061773303. The next prime is 1061773379. The reversal of 1061773378 is 8733771601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 576144009 + 485629369 = 24003^2 + 22037^2 .

It is a super-2 number, since 2×1061773378² = 2254725412459061768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061773379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265443343 + ... + 265443346.

Almost surely, 2^1061773378 is an apocalyptic number.

1061773378 is a deficient number, since it is larger than the sum of its proper divisors (530886692).

1061773378 is an equidigital number, since it uses as much as digits as its factorization.

1061773378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530886691.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 1061773378 is about 32584.8642470703. The cubic root of 1061773378 is about 1020.1811090685.

The spelling of 1061773378 in words is "one billion, sixty-one million, seven hundred seventy-three thousand, three hundred seventy-eight".